What To Watch: Monday

When a patient named Margaret McPherson is admitted to Princeton Plainsboro after suffering severe and uncontrollable vomiting, House and the team make unexpected discoveries about her identity as they assess her symptoms. When the symptoms don’t improve, the team looks to the patient’s medical history to unearth more about her past. Meanwhile, House gives Chase’s new hire a cold welcome, and a visit from House’s massage therapist forces House and Cuddy to confront the reservations in their relationship.

Season three opens with Giuliana and Bill deciding to move forward with IVF treatments. The process takes a physical and emotional toll on Giuliana but the couple is thrilled when they discover the procedure worked. Giuliana is pregnant. The couple throws themselves into preparing for the birth of their first child, including deciding to make Chicago their home and buy a house in the suburbs. But their dream house is a renovation nightmare and the stress of dealing with construction and skyrocketing costs creates tension between the couple. Then, in a tragic turn of events, Giuliana suffers a miscarriage.

-The White House grapples with a mysterious biological threat. Their only hope is to crack Sophia during interrogation. Meanwhile, Vicky and Carter (guest star D.B. Sweeney) keep their hostage captive while they await further instructions. FBI Agent Collier (guest star Heather McComb), on her search for Leila, stumbles upon Vicky’s secret life.

Castle and Beckett look into the murder of a young mathematician gunned down with a 200-year-old bullet, sparking some wild theories by Castle about a time-travelling killer. When their investigation uncovers a tricked-out DeLorean and a suspect in Victorian clothing, is it possible Castle’s crazy idea has some validity?